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Preserve ProfileInfo.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81360 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andreas Neustifter 2009-09-09 17:53:39 +00:00
parent 07abe17bd2
commit ff5dfdff56
2 changed files with 16 additions and 1 deletions
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10
lib/CodeGen/UnreachableBlockElim.cpp
View File

@ -26,6 +26,7 @@
#include "llvm/Function.h"
#include "llvm/Pass.h"
#include "llvm/Type.h"
#include "llvm/Analysis/ProfileInfo.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
@ -44,6 +45,10 @@ namespace {
public:
static char ID; // Pass identification, replacement for typeid
UnreachableBlockElim() : FunctionPass(&ID) {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addPreserved<ProfileInfo>();
}
};
}
char UnreachableBlockElim::ID = 0;
@ -79,8 +84,11 @@ bool UnreachableBlockElim::runOnFunction(Function &F) {
}
// Actually remove the blocks now.
for (unsigned i = 0, e = DeadBlocks.size(); i != e; ++i)
ProfileInfo *PI = getAnalysisIfAvailable<ProfileInfo>();
for (unsigned i = 0, e = DeadBlocks.size(); i != e; ++i) {
if (PI) PI->removeBlock(DeadBlocks[i]);
DeadBlocks[i]->eraseFromParent();
}
return DeadBlocks.size();
}

7
lib/Transforms/Utils/BreakCriticalEdges.cpp
View File

@ -21,6 +21,7 @@
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Analysis/Dominators.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/ProfileInfo.h"
#include "llvm/Function.h"
#include "llvm/Instructions.h"
#include "llvm/Type.h"
@ -44,6 +45,7 @@ namespace {
AU.addPreserved<DominatorTree>();
AU.addPreserved<DominanceFrontier>();
AU.addPreserved<LoopInfo>();
AU.addPreserved<ProfileInfo>();
// No loop canonicalization guarantees are broken by this pass.
AU.addPreservedID(LoopSimplifyID);
@ -338,5 +340,10 @@ BasicBlock *llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum,
}
}
// Update ProfileInfo if it is around.
if (ProfileInfo *PI = P->getAnalysisIfAvailable<ProfileInfo>()) {
PI->splitEdge(TIBB,DestBB,NewBB,MergeIdenticalEdges);
}
return NewBB;
}